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LIEUTENANT ADOLPH POSNER

Arch Ophthal. 1943;30(1):1-13.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

Every ophthalmologist has at one time or another doubted the reliability of his tonometer. It is obvious that any measuring device must be based on a standard. Even the length of a yardstick is determined by the Bureau of Standards. Yet there exists the anomalous situation that each ophthalmologist must establish the norms for his own instrument, which may not correspond to any other instrument.

EARLY CHECKING STATIONS

The Schiøtz tonometer, since its introduction in 1905, has gained universal recognition and is accepted as the standard. Since Schiøtz did not patent his tonometer, numerous competitive imitations came on the market, mainly of German manufacture. With them arose the necessity for checking the accuracy of tonometers. Checking stations were organized in Germany by Arnold and Karpow in 1923¹ and by Comberg in 1928.² In 1925 Schiøtz³ announced a checking station at Oslo, Norway, under his own supervision. In . . . [Full Text PDF of this Article]

Author Affiliations
MEDICAL CORPS, ARMY OF THE UNITED STATES

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